U

U1:

UnmanagedType

U2:

UnmanagedType

U4:

UnmanagedType

U8:

UnmanagedType

Udp:

ProtocolType, SocketOptionLevel, TransportType

UdpClient:

System.Net.Sockets

UInt16:

System, TypeCode

UInt32:

System, TypeCode

UInt64:

System, TypeCode

UIntPtr:

System

Unaligned:

OpCodes

Unauthorized:

HttpStatusCode

UnauthorizedAccessException:

System

UnblockSource:

SocketOptionName

Unbox:

OpCodes

Unbox():

Pointer

UnderlyingField:

EnumBuilder

UnderlyingSystemType:

EnumBuilder, IReflect, Type, TypeBuilder, TypeDelegator

Unescape():

Regex, Uri

UnhandledException:

AppDomain

UnhandledExceptionEventArgs:

System

UnhandledExceptionEventHandler:

System

Unicode:

CharSet, Encoding

UnicodeCategory:

System.Globalization

UnicodeClass:

TypeAttributes

UnicodeEncoding:

System.Text

Unindent():

Debug, Trace

Uninstall():

EventLogInstaller, PerformanceCounterInstaller

UninstallAction:

EventLogInstaller, PerformanceCounterInstaller

Union():

DnsPermission, SocketPermission, WebPermission

UniversalSortableDateTimePattern:

DateTimeFormatInfo

Unix:

AddressFamily, ProtocolFamily

Unknown:

AddressFamily, ApartmentState, ProtocolFamily, ProtocolType, SocketType, ThreadState, ThreadWaitReason, UriHostNameType, XmlNodeOrder

UnknownWrapper:

System.Runtime.InteropServices

Unload():

AppDomain

Unlock():

FileStream

Unmanaged:

MethodImplAttributes

UnmanagedExport:

MethodAttributes

UnmanagedMarshal:

System.Reflection.Emit

UnmanagedType:

System.Runtime.InteropServices

Unpack():

Overlapped

Unregister():

AuthenticationManager, RegisteredWaitHandle

UnregisterAssembly():

IRegistrationServices, RegistrationServices

UnsafeAddrOfPinnedArrayElement():

Marshal

UnsafePack():

Overlapped

UnsafeQueueUserWorkItem():

ThreadPool

UnsafeRegisterWaitForSingleObject():

ThreadPool

Unspecified:

AddressFamily, PackingSize, ProtocolFamily, ProtocolType

UnspecifiedTypeSize:

TypeBuilder

Unstarted:

ThreadState

UnsupportedMediaType:

HttpStatusCode

Unused:

HttpStatusCode

UpgradeToWriterLock():

ReaderWriterLock

UploadData():

WebClient

UploadFile():

WebClient

UploadValues():

WebClient

UppercaseLetter:

UnicodeCategory

UpperFirst:

XmlCaseOrder

Uri:

System, UriBuilder

UriBuilder:

System

UriFormatException:

System

UriHostNameType:

System

UriPartial:

System

UriSchemeFile:

Uri

UriSchemeFtp:

Uri

UriSchemeGopher:

Uri

UriSchemeHttp:

Uri

UriSchemeHttps:

Uri

UriSchemeMailto:

Uri

UriSchemeNews:

Uri

UriSchemeNntp:

Uri

UseLoopback:

SocketOptionName

USEnglish:

GregorianCalendarTypes

UseOptionC():

Regex

UseOptionR():

Regex

UseProxy:

HttpStatusCode

User:

IsolatedStorageScope

UserAgent:

HttpWebRequest

UserDomainName:

Environment

UserEscaped:

Uri

UserInfo:

Uri

UserInteractive:

Environment

UserName:

Environment, EventLogEntry, NetworkCredential, UriBuilder

UserPreferenceCategory:

Microsoft.Win32

UserPreferenceChanged:

SystemEvents

UserPreferenceChangedEventArgs:

Microsoft.Win32

UserPreferenceChangedEventHandler:

Microsoft.Win32

UserPreferenceChanging:

SystemEvents

UserPreferenceChangingEventArgs:

Microsoft.Win32

UserPreferenceChangingEventHandler:

Microsoft.Win32

UserProcessorTime:

Process, ProcessThread

UserRequest:

ThreadWaitReason

Users:

Registry, RegistryHive

UseShellExecute:

ProcessStartInfo

UseUserOverride:

CultureInfo

UsingNamespace():

ILGenerator

UtcNow:

DateTime

UTF7:

Encoding

UTF7Encoding:

System.Text

UTF8:

Encoding

UTF8Encoding:

System.Text